body{
  margin: 0px;
  padding: 0px;
}

.indexTop{
  height: 100px;
  width: 100%;
  background-color: antiquewhite;
  text-align: center;
  line-height: 100px;
  font-size: 50px;
}

.indexLeft{
  width: 200px;
  height: calc( 100vh - 100px );
  background-color: aquamarine;
  float: left;
}

.indexRight{
  width: calc( 100% - 200px );
  height: calc( 100vh - 100px );
  background-color: cornflowerblue;
  float: left;
}